Capillary rise height of sulfate in Portland-limestone cement concrete under physical attack: Experimental and modelling investigation

2021 ◽  
pp. 104299
Author(s):  
Zhongya Zhang ◽  
Yang Zou ◽  
Jun Yang ◽  
Jianting Zhou
Keyword(s):  
Capillary Rise ◽  
Cement Concrete ◽  
Physical Attack ◽  
Portland Limestone Cement ◽  
Limestone Cement ◽  
Rise Height

The permeability of Portland limestone cement concrete

2003 ◽  
Vol 33 (9) ◽  
pp. 1465-1471 ◽  
Author(s):  
S. Tsivilis ◽  
J. Tsantilas ◽  
G. Kakali ◽  
E. Chaniotakis ◽  
A. Sakellariou
Keyword(s):  
Cement Concrete ◽  
Portland Limestone Cement ◽  
Limestone Cement

Long-term thaumasite sulfate attack on Portland-limestone cement concrete: A multi-technique analytical approach for assessing phase assemblage

2020 ◽  
Vol 130 ◽  
pp. 105995 ◽  
Author(s):  
Konstantinos Sotiriadis ◽  
Petra Mácová ◽  
Anton S. Mazur ◽  
Alberto Viani ◽  
Peter M. Tolstoy ◽  
...  
Keyword(s):  
Analytical Approach ◽  
Sulfate Attack ◽  
Phase Assemblage ◽  
Cement Concrete ◽  
Portland Limestone Cement ◽  
Limestone Cement

The Effect of Chlorides on the Thaumasite Form of Sulfate Attack in Limestone Cement Concrete

2010 ◽  
Vol 636-637 ◽  
pp. 1349-1354
Author(s):  
K. Sotiriadis ◽  
E. Nikolopoulou ◽  
Sotiris Tsivilis
Keyword(s):  
Portland Cement ◽  
Chloride Content ◽  
Concrete Specimen ◽  
Visual Assessment ◽  
Xrd Analysis ◽  
Sulfate Attack ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Portland Limestone Cement ◽  
Limestone Cement

In this paper the effect of chlorides on the thaumasite form of sulfate attack in limestone cement concrete is studied. Concrete specimens made from ordinary Portland cement and two Portland limestone cements (limestone content 15% and 35% respectively) were prepared. After 28 days of curing the specimens were immersed in six solutions of various sulfate and chloride content and stored at 5oC. Visual assessment of the specimens, mass measurements and compressive strength tests took place for a period of 24 months. XRD method was used to identify thaumasite in the deteriorated parts of the specimens. All measurements showed that Portland cement concrete exhibits a lower degree of deterioration than Portland limestone cement concrete. Specimen disintegration was more severe, the higher the limestone contents of the cements and the higher the sulfate content of the corrosive storage solutions. Chlorides play an inhibitory role, delaying the deterioration of the concrete specimens. XRD analysis showed the presence of thaumasite at the deteriorated parts of the specimens after nine months of curing.

A Study on the Chloride Diffusion into Portland Limestone Cement Concrete

2010 ◽  
Vol 636-637 ◽  
pp. 1355-1361 ◽  
Author(s):  
Sotiris Tsivilis ◽  
A. Asprogerakas
Keyword(s):  
Chloride Transport ◽  
Chloride Ions ◽  
Chloride Penetration ◽  
Chloride Diffusion ◽  
Hardened Concrete ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Portland Limestone Cement ◽  
Limestone Cement

In this paper the diffusion of chloride ions through limestone cement concrete is studied. The Portland limestone cements have many benefits and the new European Standard EN 197-1 identifies 4 types of Portland limestone cement containing 6-20% limestone (types II/A-L and II/A-LL) and 21-35% limestone (types II/B-L and II/B-LL), respectively. Portland limestone cements of different fineness and limestone content (0-35% w/w) have been produced by inter-grinding clinker, gypsum and limestone. Six concrete mixtures were prepared and the Nordtest Method (accelerated chloride penetration) was applied for the determination of penetration parameters for estimating the resistance against chloride penetration into hardened concrete. The diffusion equation of Fick’s second law was used for the determination of the effective chloride transport coefficient. It is concluded that Portland limestone cement concrete indicates competitive behavior with the Portland cement concrete. Limestone content up to 15% has a positive effect on the concrete resistance against chloride penetration.

The effects of reduced paste volume in Portland limestone cement concrete

2021 ◽  
pp. 1-15
Author(s):  
Hung-Wen Chung ◽  
Thanachart Subgranon ◽  
Mang Tia ◽  
Harvey DeFord ◽  
Jose Armenteros
Keyword(s):  
Cement Concrete ◽  
Portland Limestone Cement ◽  
Limestone Cement
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